/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineFriendsInterface.h
Delegate used when an unblock request has completed
typedef TMulticastDelegate_FiveParams< void, int32, bool, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) &, const [FString](API\Runtime\Core\Containers\FString) &, const [FString](API\Runtime\Core\Containers\FString) & > FOnUnblockedPlayerComplete